Ultra Stable 18-Bit DAC

Ultra Stable 18-Bit DAC

Ultra Stable 18 Bit DAC

The AD5780 is a single 18-bit, unbuffered voltage output DAC that operates from a bipolar supply of up to 33 V. The AD5780 accepts a positive reference input range of 5 V to VDD − 2.5 V and a negative reference input range of VSS + 2.5 V to 0 V. The AD5780 offers a relative accuracy specification of ±0.5 LSB maximum, and operation is guaranteed monotonic with a ±0.5 LSB DNL maximum specification.

The part uses a versatile 3-wire serial interface that operates at clock rates of up to 35 MHz and is compatible with standard SPI, QSPI™, MICROWIRE™, and DSP interface standards. The part incorporates a power-on reset circuit that ensures that the DAC output powers up to 0 V and in a known output impedance state and remains in this state until a valid write to the device takes place. The part provides an output clamp feature that places the output in a defined load state.

  • True 18-Bit Accuracy.
  • Wide Power Supply Range of Up to ±16.5 V.
  • −40°C to +125°C Operating Temperature Range.
  • Low 8 nV/√Hz Noise.
  • Low 0.018 ppm/°C gain error temperature coefficient.
  • Medical instrumentation
  • Test and measurement
  • Industrial control
  • Scientific and aerospace instrumentation
  • Data acquisition systems
  • Digital gain and offset adjustment
  • Power supply control

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